Treadmill



FIG. 1 is a top, front and left perspective view of a treadmill showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged partial view of FIG. 1 ; and,

FIG. 9 is an enlarged partial view of FIG. 1 .

The broken lines in the figures illustrate portions the treadmill that form no part of the claimed design. 

CLAIM The ornamental design for a treadmill, shown and described. 